The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Mar. 27, 2020
Tadano Ltd., Kagawa, JP;
Yoshimasa Minami, Kagawa, JP;
Shinsuke Kanda, Kagawa, JP;
TADANO LTD., Kagawa, JP;
Abstract
There is provided a crane control method whereby, during automatic transportation of a load along a preset transport route using a crane, it is possible to reliably transport the load along the route; and a crane that can be controlled by the crane control method. A control device () calculates target speed signals (VU), (VW), (VR) for designating the target hoisting speed and the target rotational speed of a boom () and the target winding/unwinding speed of main wire rope () or sub wire rope (), calculates the maximum speeds (VUmax), (VWmax), (VRmax) of the hoisting and rotation of the boom () and winding/unwinding of the main wire rope () or the sub wire rope (), and, if a target speed exceeds the corresponding maximum speed, controls the crane () by multiplying the target speed signal (VU), (VW), (VR) by a coefficient and restricting the target speed signal (VU), (VW), (VR) to be less than the corresponding maximum speed.